2D magnetic mesocrystals for bit patterned media

2D magnetic mesocrystals for bit patterned media

Bit patterned media exhibits great potential in satisfying the increasing demand for higher information storage density, but the present media fabrication technique is complicated. Here, a 2D magnetic mesocrystal with monodisperse CoFe2O4 (CFO) nanocrystals is fabricated through a combination of nan...

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Bibliographic Details
Main Authors: Guo, Shanshan, Xu, Feng, Wang, Baomin, Wang, Ning, Yang, Huali, Dhanapal, Pravarthana, Xue, Fei, Wang, Junling, Li, Run-Wei
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2020
Subjects:
Engineering::Materials
2D Magnetic CoFe2O4 Mesocrystals
Bit Patterned Media
Online Access:https://hdl.handle.net/10356/139593
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Institution: Nanyang Technological University
Language: English
Description
Summary:Bit patterned media exhibits great potential in satisfying the increasing demand for higher information storage density, but the present media fabrication technique is complicated. Here, a 2D magnetic mesocrystal with monodisperse CoFe2O4 (CFO) nanocrystals is fabricated through a combination of nanoseeds layer growth and oxides self‐assembly method. The monodisperse CFO nanomagnets protrude from the substrate surface with perfect crystal facets, specific crystallographic orientation, and are fully relaxed. Systematic magnetic characterizations, such as dynamic cantilever magnetometry for single CFO nanocrystal, magnetic force microscopy, and superconducting quantum interference device magnetometry for large area, reveal the novel tilted magnetic anisotropy and the switchable single domain state. This work provides a new way to fabricate bit patterned media with controlled material structure simply by a nanoseeds‐mediated self‐assembly method.

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